In a study of supermarket brand products, the society found Morrisons was one of the worst offenders, with their razors costing more than half as much for women.

The research, published in The Times, found a man can buy a triple blade razor with five replacement cartridges at a Yorkshire supermarket for £2 while women must pay £3.13 and only receive two replacement cartridges.

According to the research, an equivalent basket of goods bought at Morrisons costs 56 per cent more for women, 25 per cent more at Sainsbury’s and 24 per cent more at Tesco.

Female shoppers at Asda were found to have to pay 22 per cent more.

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The Fawcett Society’s chief executive Sam Smethers said: “Here we see them consistently charging significantly more for their own-brand products which are marketed at women. In most cases, these are not minor prices differences, there are big margins.

“We know that women are paid less than men, are targeted with beauty products and advertising and now we see them being charged more. It will make many women ask themselves if they can trust these high street brands.

“The big four have an opportunity here. Will they go the extra mile to demonstrate to their female customers that their pricing is fair? We don’t just want to see one or two prices reduced, we want sexist pricing to end.”

A Morrison’s spokesperson said: “For identical products, our prices are exactly the same. The survey fails to compare identical products, so isn’t comparing like with life.

“Even though some products sound the same, for example triple bladed razors, the actual specifications vary between the men’s and women’s versions. These variations cause retail prices to differ.”

An Asda spokesperson said the supermarket prided itself on giving their customers the best value, saying: “We offer a range of items from basic everyday essentials through to products with the little luxury touches we know our customers love and always aim to match the price on like-for-like products no matter whether they are primarily aimed at men or women.”

A Tesco spokesperson said: “We work hard to offer customers clear, fair and transparent pricing and we do not price our products by the gender of our customers. Many factors impact the price of our products, including the volumes produced, additional performance features, investment in research and brand development.”

A Sainsbury’s spokesperson said: “We always aim to offer the very best quality and value. The prices of Sainsbury’s products are influenced by several factors- but gender is not one of them.”

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